Automatic magazine nail and tack hammer.



' No. 002,032. TATIINTND 00T. 24, 1905.

I. I. IIAMMNS 0 I. A. MAGNT. AUTOMATIC MAGAZINEJ NAIL AND TACK HAMMER.

APPLICATION FILED DEG. 30, 1904.

I m i i@ ///////////////I/ NNN@ @wmmm @MJ X UNITED STATES PATENT OFFICE.

FREDERIC J. HAMMES AND JOSEPH MAGEE, OF PHILADELPHIA, PENNSYLVANIA; SAIDHAMMES ASSIGNOR TO ANNA D. HAMMES, OF PHILADELPHIA, PENNSYLVANIA.

AUTOMATIC MAGAZINE NAIL AND TACK HAMMER.

Specification of Letters Patent.

Patented Oct. 24, 1905.

Application filed December 30,1904. Serial No. 239,048.

To @ZZ/whom t may concern:

Be it known that we., FREDERIC J. HAMMEs and J osEPH A. MAGEE, citizensof the United States. residingin the city and county of Philadelphia,State of Pennsylvania, have invented a new and useful Automatic MagazineNail and Tack Hammer, of which the following is a specification.

The object of our invention is'to provide a tack-hammer in which thetacks are retained within the device and are readily accessible andeasily presented for driving processes.

A further object of our invention is to use a novel construction ofmagazine mechanism for placing the tacks in position to be driven.

Our invention further consists of novel details of construction, all aswill be hereinafter fully set forth.

Figure 1 represents a perspective View of a construction involving ourinvention. Fig. 2 represents a fragmentary verticall longitudinalsection. Fig. 3 represents a fragmentary vertical longitudinal sectionof one ond of our construction, showing the parts in a differentposition from that shown in Fig. 2. Fig. 4 represents a transversesection upon line y y of Fig. 2. Fig. 5 represents a transverse sectionupon line a .e of Fig. 2. Fig. 6 represents a bottom plan view of aportion of our device.

Similar numerals of reference indicate corresponding parts in thefigures.

Referring lto the drawings, 1 designates a handle, to which is attachedbarrel 2, having at its opposite end head 3. Within this barrel islocated a plunger 4, pressed forward by spring 5 and controlled from theexterior by projecting pin 6, passing through slot 7 in the under sideof the barrel. Upon the opposite side of the barrel from slot 7 isplaced a magazine having loading-aperture 9 and T-shaped groove 10`within which the heads of the tacks are adapted to move. The plunger 4is provided with a lug 11, projecting into this T- shaped feeding-slotand engaging with the heads of the tacks. This plunger is drawn backuntil block 11 is behind the loading-aperture before the tacks are putin. They are then inserted singly and allowed to drop down toward thehead of the mechanism, the points of the tacks being directed toward thecenter of the barrel.

When the magazine is sufficiently loaded,

in line therewith.

the plunger 4 is allowed to engage with the heads of the tacks, and itsspring engagement therewith constitutes a continual feeding force ofapproximately uniform pressure. The magazine in the form shown isattached by screws with aperture 15 and sliding bar 16 Bar 16 is pressedtoward its retracted lposition by spring 17 in groove 18 of the headpressing against lug 19, projecting from said bar andmaintained-centrally of said lug by pin 20. The head of bar 16 isprovided with spring-clips 21 and stop 22. l

The head 3 is formed in two parts, of which 23 is rigidly attached tothe barrel and 24 is removable therefrom, the parts 23 and 24 thusproviding a casing, within which are located the bar 16 and cam 25. Thiscam is mounted upon shaft 26, upon the outer end of which beyond part 24is located gear 27, engaging segmental rack 28, which is pivoted uponscrew 29. Eccentrically of this pivot-point 29 is attached rod 30 byscrew 31.

Rod 30 passes through guide 32 upon the side of the barrel and ispressed forwardly from said guide by a spiral spring 33. Upon theopposite end rod 30 is pivoted to one arm of a three-armed lever 34 byscrew 35. One of the arms 36 of this lever-is pivoted at 37 to lug 38,rigidly attached to the barrel or to the magazine at this point.

Trigger 39, forming the third arm, is so located that strain upon itwill draw rod 30 toward the handle of our device against the pressure ofthe spring 33 and will throw rack 28 and turn cam 25 to the positionshown in Fig. 3. Bar 16 under pressure of spring 17 will follow up thiscam and also come to the position shown in Fig. 3, in which position atack is Jfed between the spring clips or jaws 21 and against stop 22.Release of the trigger 39 results in the return of the bar to theposition shown in Fig. 2 with the tack in place,

as there shown. In Vthis position the tack may be driven as with anordinary hammer, but without danger of accidental release of the tack orof the hammer failing to strike the same properly. l

It will be evident that various changes may be made by those skilled inthe art which will come within the scope of our invention and we do not.therefore, desire to be limited in every instance to the exactconstruction herein shown and described nor to the use of the device fortacks, as it is equally serviceable for feeding and driving nails,rivets, and the like.

Having thus described our invention, what we claim as new, and desire tosecure by Letters Patent, is-

1. In a magazine tack-hammer, a trigger, a spring-pressedpivotally-mounted segmental rack, a pinion engaging therewith, a cammovable with said pinion, a vertically-reciprocatory bar in constantengagement with said cam, a magazine, means for feeding the tacks insaid magazine and means upon the head of the bar for yieldngly holdingone of said tacks.

2. In a magazine tack-hammer, a verticallyreciprocatory bar, a springpressed cam, means for moving said cam to reciprocate said bar, meansupon the head of the bar for holding a tack thereon and means forfeeding a tack tothe end of said bar.

3. In mechanism of the class described, a magazine, a spring-retractedtack-holder movable at an angle thereto and capable of aline- Inenttherewith, a spring-pressed cam, and

cam-operatngmeans for vertically reciprocating said tack-holder.

4f. In mechanism of the class described, a barrel,atrigger in proximitythereto, aspringretracted rod operated by said trigger, a rackeccentrically connected with and operated by said rod, a tack-holdingmechanism mounted for vertical reciprocation and means whereby theoperation of the rack moves said tackholding mechanism.

5. In mechanism of the class described, a pivotcd trigger, a cam, agear, a segmental gear engaging the same and spring-pressed meanslntermediate said segmental gear and trigger for actuating said cam, anda reciprocable tack-holding means constantly held in contact with saidcam.

FREDERIC J. HAMMES. JOSEPH A. MAGEE.

Witnesses:

JOHN A. VVIEDERSHEIM, S. R. CARR.

